Method for cutting honeycomb dried body, method for manufacturing honeycomb structured body, honeycomb dried body, and honeycomb structured body

Abstract

In a method for cutting a honeycomb dried body, the honeycomb dried body is cut using a water jet. The honeycomb dried body is made by drying a honeycomb molded body including cell walls defining a plurality of cells.

What is claimed is: 
     
         1 . A method for cutting a honeycomb dried body, the method comprising:
 cutting the honeycomb dried body using a water jet, the honeycomb dried body being made by drying a honeycomb molded body including cell walls defining a plurality of cells.   
     
     
         2 . The method according to  claim 1 ,
 wherein the honeycomb dried body contains a forming auxiliary and an organic binder.   
     
     
         3 . The method according to  claim 2 ,
 wherein the forming auxiliary comprises at least one of ethylene glycol, dextrin, fatty acids, fatty acid soap, and polyalcohol.   
     
     
         4 . The method according to  claim 2 ,
 wherein the organic binder comprises at least one of methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, and polyethylene glycol.   
     
     
         5 . The method according to  claim 1 , the method further comprising:
 extruding a ceramic raw material using an extruder to mold the ceramic raw material into an uncut honeycomb molded body including cell walls defining a plurality of cells; and   drying the uncut honeycomb molded body to obtain an uncut honeycomb dried body, the uncut honeycomb dried body being cut in the cutting.   
     
     
         6 . The method according to  claim 5 ,
 wherein the molding, the drying, and the cutting are successively carried out,   wherein in the cutting, the uncut honeycomb dried body is cut while the water jet moves along a moving direction of the uncut honeycomb dried body, and   wherein in the cutting, a moving speed of a jet nozzle for the water jet is synchronized with a moving speed of the uncut honeycomb dried body.   
     
     
         7 . The method according to  claim 6 ,
 wherein in the molding, a moving speed of the uncut honeycomb molded body extruded from the extruder is measured by a speed sensor, and   wherein in the cutting, the moving speed of the jet nozzle for the water jet in a direction parallel to the moving direction of the uncut honeycomb dried body is set to be a same as the moving speed of the uncut honeycomb molded body measured by the speed sensor.   
     
     
         8 . The method according to  claim 5 ,
 wherein in the drying, the uncut honeycomb molded body is dried using high-frequency dielectric drying.   
     
     
         9 . The method according to  claim 1 , further comprising:
 extruding a ceramic raw material using an extruder to mold the ceramic raw material into an uncut honeycomb molded body including cell walls defining a plurality of cells;   cutting the uncut honeycomb molded body to obtain a temporarily cut honeycomb molded body; and   drying the temporarily cut honeycomb molded body to obtain a temporarily cut honeycomb dried body, the temporarily cut honeycomb dried body being cut in the cutting of the honeycomb dried body.   
     
     
         10 . The method according to  claim 1 ,
 wherein the honeycomb dried body has a moisture content of about 0% to about 6% by mass.   
     
     
         11 . The method according to  claim 1 ,
 wherein an angle between a jet nozzle for the water jet and an upper face of the honeycomb dried body is about 5° to about 85°.   
     
     
         12 . The method according to  claim 1 ,
 wherein an angle between a jet nozzle for the water jet and all the cell walls in a cross section perpendicular to a longitudinal direction of the honeycomb dried body is about 5° to about 85°.   
     
     
         13 . The method according to  claim 1 ,
 wherein the water jet has a water pressure of about 200 MPa to about 400 MPa.   
     
     
         14 . The method according to  claim 1 ,
 wherein a cutting speed in the cutting is about 15 mm/sec to about 150 mm/sec.   
     
     
         15 . The method according to  claim 1 ,
 wherein the honeycomb dried body has an aperture ratio of about 60% to about 90%.   
     
     
         16 . A method for manufacturing a honeycomb structured body including a honeycomb fired body including cell walls defining a plurality of cells, the method comprising:
 firing a honeycomb dried body having a predetermined length obtained using a method for cutting a honeycomb dried body to obtain the honeycomb fired body, the method comprising:
 cutting the honeycomb dried body using a water jet, the honeycomb dried body being made by drying a honeycomb molded body including cell walls defining a plurality of cells. 
   
     
     
         17 . A honeycomb dried body obtained by cutting a honeycomb dried body using a water jet, the honeycomb dried body being made by drying a honeycomb molded body including cell walls defining a plurality of cells. 
     
     
         18 . A honeycomb structured body comprising:
 a honeycomb fired body obtained by firing a honeycomb dried body having a predetermined length obtained by cutting a honeycomb dried body using a water jet, the honeycomb dried body being made by drying a honeycomb molded body including cell walls defining a plurality of cells.   
     
     
         19 . The method according to  claim 3 ,
 wherein the organic binder comprises at least one of methyl cellulose, carboxymethyl cellulose, hydroxyethyl cellulose, and polyethylene glycol.   
     
     
         20 . The method according to  claim 2 , the method further comprising:
 extruding a ceramic raw material using an extruder to mold the ceramic raw material into an uncut honeycomb molded body including cell walls defining a plurality of cells; and   drying the uncut honeycomb molded body to obtain an uncut honeycomb dried body, the uncut honeycomb dried body being cut in the cutting.